Switch-stand.



S. F. PHILIPS.

SWITCH STAND.

APPLICATION FILED SEPT. 20, 1913.

1, 1 20,529, Patented Dec. 8, 1914,

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S. F. PHILIPS.

SWITCH STAND. APPLICATION FILED 813N220, 1913. 1,1 20,529. Patented Dec.8, 1914.

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UNTTED STATES FATEN T @FFTQFS.

SMITH F. PHILIPS, OF EL IPASO, TEXAS.

SVJIT GEE-STAND.

menses.

Application filed September 20, 1913.

To all whom it may concern Be it known that I, SMITH F. PHILIPS, acitizen of the United States, and a resident of El Paso, in the countyof El Paso and State of Texas, have invented a new and usefulImprovement in Switch-Stands, of which the following is a specification.

My invention is an improvement in switch stands, and has for its objectto provide a stand of the character specified, having mechanism forthrowing the switch, and having in addition signal mechanism, soarranged and connected to the operating mechanism for the switch, thatwhen the switch is in closed and locked position, the signal will be atsafety, and wherein the signal operating mechanism is so connected withthe switch operating mechanism that the switch operating mechanismcannot be operated to open the switch, until the signal is set atdanger, and wherein the signal cannot be moved into the safety position,until the switch is returned to closed and locked position.

In the drawings :-Figure l is a perspective view of the improved stand.Figs. 2, 3 and 4 are transverse vertical sections taken substantially onthe line 22 of Fig. 6, and showing the parts in different positions,Fig. 2 showing the parts with the switch open, Fig. 3 showing the partswith the switch closed and the operating lever raised, and Fig. 1showing the operating lever closed. Fig. 5 is a section on the line 5-5of Fig. 2, looking in the direction of the arrows, Fig. 6 is a frontview of the box frame partly in section, Fig. 7 is a view of the boxframe at right angles to Fig. 6, Fig. 8 is a top plan view of a portionof the base of the stand, and Fig. 9 is an enlarged detail of a portionof the signal mechanism.

The present embodiment of the invention comprises a switch stand,consisting of a table 1, supported by the usual legs 2, and havingjournaled in vertical position at the center thereof the switchoperating shaft 3. At its lower end, the switch operating shaft isprovided with a lateral arm 1, which is connected with the switch points(not shown) in the usual manner.

An arm 5 is provided with a bearing 6 at one end, and the said bearingengages the shaft 3 between the lower end of a sleeve 7 journaled on theshaft and the table, and is pinned to the shaft as indicated at 3 Thearm is longitudinally slotted or recessed at Specification of LettersPatent Patented Dec. 8, 1914..

Serial No. 790,918.

its outer end as indicated at 8, and the switch operating lever 9 isarranged with one of its ends 1n the slot or recess 8, and is pivoted tothe arm by means of a pivot pin 10.

The lever is provided with the usual perforated locking lug 11, and thearm is transversely grooved on its upper face, near the inner end of theslot as indicated at 12, the said groove being provided for engagementby a pin 13, arranged transversely of the inner end of the lever. Whenthe lever is in alinement with the arm, the said pin 13 is so arrangedwith respect to the groove that it will engage the bottom of the groovewhen the lever is in alinement with the arm, and in position to throwthe switch, to prevent the further upward movement of the lever.

The table 1 is provided with the usual radial recesses or notches 14;and 15, for engagement by the lever 9, to hold the shaft 3 with thepoints in open or closed position. hen the lever engages the notch 14,the switch is in closed position, while when the lever engages the notch15, the switch is in open position. A standard 16 is secured to thetable, and extends upwardly therefrom, and a box frame 1'7 is arrangedat the upper end of the said standard.

The box frame has bearings at its ends for the sleeve '7, and for theupper end of the shaft 3, and the standard is provided with an extensionplate 18 at the table, the said plate being secured to the table bymeans of a lateral flange 19, the said flange lapping upon the upperface of the table and being secured thereto by means of screws 20 or thelike.

At the end remote from the standard, the extension plate is providedwith a lateral lug 21, having a vertical slot 22 for engagement by thelocking lug 11 of the switch lever. When the lever is in engagement withthe recess or notch 14:, the perforated locking lug 11 will pass throughthe slot 22, and

the ordinary padlock may be engagedwith the opening of the lug.

An angle plate consisting of portions 23 and 24: is connected with thetable 1, near the notch or recess 15, the portion 23 of the said platebeing secured to the said table, and the portion 24 thereof extendingperpendicular upward from the table parallel with the notch or recess15.

The portion 24: of the angle plate is provided with a lateral lug 25,and the said lug has a vertical slot 26 for receiving the locking lug 11of the operating lever when the switch is in open position, and it willbe evident that the switch may be locked in either open or closedposition.

A bearing block 27 is secured within the box frame 17 near the upper endthereof, by means of a screw 28 or the like, and the uper end of thesleeve 7 extends through the bearing block, and a pinion 29 is securedto the sleeve above the block. a

A semaphore or signal arm 30 is pivoted at one end within the box frame,by means of a screw 31, which passes through the adjacent side of thebox frame, through the arm and into engagement with the bearing block27, before mentioned.

The signal or semaphore arm when in safety position is concealed andcovered by the adjacent side of the box frame, and the said arm isprovided with a segment 32 of gear teeth on its inner face and at itspivoted end, the said segment having the screw 31 as a center.

The teeth of the segment 32 mesh with the teeth of the pinion 29. Whenthe semaphore arm is swung into danger position, the pinion and thesleeve 7 are oscillated in one direction, while when the semaphore armis swung into safety position, the sleeve and the pinion are oscillatedin the opposite direction. The sleeve or pinion is provided with anupward extension 50, which extends above the upper end of the box frame.

A threearmed rock lever is pivoted to the standard near its connectionwith the table, the said lever comprising arms 33 and 34 in alinement,and an arm 35 extending at approximately a right angle to the arms 33and 34:. p

A link 36 connects the arm 33 of the threearmed rock lever, to a laterallug 37 at the inner end of the semaphore arm, and another link 38connects the arm 34 with one of the arms 39 of an elbow lever. The elbowlever is pivoted at 40 to a bearing bracket 41, on the base 42 of theswitch stand, and the other arm 43' of the elbow lever is connected bymeans of a link 44- with one of the arms &5 of another elbow lever, thesaid lever consisting ofthe arn t5, and an arm 16 extending atapproxhnately a right angle to the arm 45.

The arm 35 of the three-armed rock lever is received within a recess orslot 47 in one end of a block or plate 48, arranged to slide on theinner face of the extension plate 18,

and the other end of the said block is provided with an opening 49 intowhich extends one end of the pin 13 of the operating lever 9, when thesaid lever is in position to engage the notch 14 of the table.

hen the operating lever 9 of the switch shaft is swung into engagementwith the notch 14 of the table, the block or plate 48 is moved towardthe locking lug 21 of the extension plate, and the three-armed rocklever is swung in a direction to move the semaphore or signal arm intosafety position, while when the said lever 9 is swung into alinementwith the arm 5, and out of engagement with the notch 1 1 of the table,the said three-armed lever is moved in a direction to move the signal orsemaphore arm into danger position.

W hen the operating lever is in alinement with the arm 5, the said leverand the arm may be swung toward the notch 15 without interfering withthe block or the threearmed rock lever. turned toward the notch 14, thecross pin 13 will engage the opening 49 of the block, and the said pinwill engage the said opening slightly before the lever is in position toengage the notch 1%. In other words, the lever 9 cannot be dropped intoengagement with the notch of the table without moving the block in adirectionto cause the three-armed rock lever to move the semaphore orsignal arm into the box frame. The link 38, before mentioned, passesthrough a slot or opening in the table.-

r-i locking pin 51 is pivoted to the free end of the arm 4:6 of thelast-named elbow lever, and the said locking pin is adapted to passthrough registering openings 52 in a casing connected to the switchstand base at one side thereof, and an opening 54% in a plate 55-, whichis slidable into and out of the casing.

The operation of the device is as follows :Vi hen the switch operatinglever 9 is in engagement with the slot 1d of the switch table, thesemaphore arm 30 is within the box frame and if there is a signal lampon the extension 50 at the top of the box frame, the said lamp will showa white light or green, as the case may be, indicating that the switchis closed and that the track is safe. When the lever 9 is swung upwardlyinto alinement with the arm 5, no change takes place in any of theparts, except in the said lever. When however, the lever is swung out ofthe notch or recess 14, the

lock 4-8 is moved in a direction to swing the three-armed lever 333 l35in a direction to draw the link 36 downward and to swing the semaphorearm into danger poblock 48, just before the lever comes into- When thelever is reregister with the notch 14, and when the said lever is inregister with the said a notch, the pin 13 will be fully engaged withthe opening 49. To return the lever 9 to locking position, that is, tocause the lug 11 to pass through the slot 22 of the locking lug 21, itis necessary to swing the said lever downwardly as shown in Figs. 1 to6.. The downward swinging movement of the lever moves the block 48toward the lug 21 and moves the link 36 in a direction to swing thesemaphore arms 30 into the box frame. The same movement engages thelocking pin 51 from the plate 55, and swings the lantern on theextension 50 to safety position, if there be a lantern on the saidextension. The plate is connected with the switch points, and when thesaid points are set for the main line, the pin 51 looks the plate andthe points, so that should the switch stand be torn from its position bya swinging door or other obstruction, the switch points will remainlocked, and the main track will remain clear.

It will be evident from the description, that when the switch is closed,that is when the points are set for the main line, the said pointscannot be set for the side track, without first setting a signal indanger position, and that the operating lever for the switch cannot belocked with the pins in either open or closed position, without settingthe signal when the points are open, or returning the signal when thepoints are closed.

I claim:

1. In a switch stand, the combination with the operating shaft journaled in vertical position in the stand and connected with the pointsfor moving the points when the shaft is oscillated, of an arm rigidlyconnected with the shaft at the table, a lever pivoted to the arm forswinging movement into and out of engagement with the notches of thetable for holding the shaft with the points in open or closed position,a sleeve journaled on the shaft above the table, a standard secured tothe stand and extending above the same and arranged with a box frame atits top, said shaft and sleeve being journaled in the frame, a semaphorearm pivoted at one end in the box frame at the top thereof, said sleevehaving an extension above the box frame for receiving a signal lamp, aconnection between the semaphore arm and the sleeve for oscillating thesleeve when the arm is swung into and out of the box frame, a three-armlever pivoted to the standard, a link connecting one of the arms of thelever with the semaphore arm, a block connected with another arm forsliding movement on the table adjacent to the notch, a cross pin at theinner end of the lever, the arm having a groove for receiving the pin tolimit the upward movement of the lever, said block having an opening forreceiving the pin when the lever is in register with the notch with thepoints closed.

2. In a switch stand, the combination with the operating shaft journaledvertically in the stand and connected with the points for moving thesame when the shaft is oscillated, of a lever mounted to swing into andout of horizontal position and connected with the shaft for oscillatingthe shaft, said stand having notches for receiving the lever to hold thepoints open or closed, a box frame supported above the stand, a signalarm pivoted within the frame for swinging movement into and out of theframe, a three-arm lever pivoted above the stand and having one of itsarms connected with the signal arm for moving the said arm, a barconnected with the points, a guide in connection with the stand, the barbeing movable in the guide, said guide and bar having openingsregistering when the points are closed, a locking pin for engaging theopenings, a connection between the locking pin and another arm of thethree-armed lever, a block slidable on the stand adjacent to the notchthereof and connected to the third arm of the lever, said lever having across pin and the block an opening for engagement by the pin when thelever moves into register with the said notch, the third arm of thelever being connected to the block, said block being moved by the leverwhen it engages with the notch in a direction to engage the look ing pinwith the openings and to swing the signal arm into the box frame.

SMITH F. PHILIPS. Witnesses A. H. Gonos'rnm, R. ATTERBURY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

